#include <REGX52.H>

void Delay(unsigned int x)
{
	
	unsigned char data i, j;

	while(x--)
	{
			i = 2;
			j = 239;
			do
			{
				while (--j);
			} while (--i);
	}
}

void main()
{
	unsigned char LEDNum = 0;
		while(1)
		{
			if(P3_1 == 0)
			{
				Delay(20);
				while(P3_1 == 0);
				Delay(20);
				
				//LEDNum++;
				//P2 = ~LEDNum;
				P2--;
			}
		}
}